Improvement in the hearth of the blast-furnace



.to auswerthe purpose perfectly well.

'UNITED 1 GEORGE non,` or., ELK RIDGE tannins," MARYLAND.'

{Il M 'PfRovMeN-r N fri-gs. HAAERTH oF. TH E 'B'LAsTlc-"FURNACl-:g

"Specification formingI part kofy Letters 'TO/ufwhomit may concern." I

Lau ding, Anne Arundel county, State of Maryland, have invented an Improvement in the Heart/hs of Blast-Furnaces, by'which means the iron is let in 'and 'contained in areservoir on'the outside of the furnaoehearth, for the ipurpose herein fully set'fo'rth;V and Ido hereact description thereof.

The nature andv object of my invention con-V sist in conveying the melted iron into a reservoirplaced on the outside of the furiacehearth by means of a channelcut entirely out;

by declare that thefollowing is aV full andex- A 4of the bottom stone, the object of which is to,`

, the purpose o f illust-ration I will describe it inA the 'manner in which I have tried it and found The drawings 'which accompany andv make' part of this specification show a section of-an ordinary blast-furnace forsmelting iron-ore, which is all that is necessary to-va clear illus-- tf'ation of my invent-ion or improvement. i

rAny person that is in the leest familiar with the construction of an ordinary blast-furnace hearth und the inode of obtaining access to the melted iron will at the first v'iew of this speci,- ication understandthe plan and 'see the 'adyantagesto be derived from its adoption.

Figure-1 represents a' perspective view of anordinary blast-furnace for smelting iron ore,. to whichy I intend to apply niy 'invention and improvement. Aisthe-bottom stone', in which a channel is cut vfrom the center of the hearth (from three to eight inches square'or more)l crosswise and running under the lower tuyerestone to its center until it intersects another channel of similar dimension running length wise of the hearth and under the center of'.

lowertuyercstoiie until it communicates with thereservoir .0,'whi-ch may be cut out of stone or built vof {ire-bricks fourteen inches diameter and eighteen inches deep on the outside of, the hearth.- Figl 2 represents alplan' of the -bottom lof the hearth. VB is the'channel that is intendedto conduct the iron into-.the reservoir C. D is the dam-stone as is used in ordinary blast-furnaces. l V l lAlthough I have described the iron as passing 4through the channel under Athe tuyerethe slightest knowledge of the construction of iblYast-fuinace. hefarths'v that the i'ron may be made to pass througha channel into a reservoir placed at any point directly on the outside of .the .hearth that the founder or melder eration of fcastingniay goon withut'interrup- 'tion tolthe blast ofthefurnace, I place a cast- 'stone-to the tyxnp, and 1u te it o ver with clay, to. prevent the blaze from issuing there, which' would otherwise prevent 'the workmen from .having free andeas'y access to thejiron coniron contained therein. Y What I claim as myinvention and improvefree and easy accessfto it without first pulling tion of the'furnace while casting by means oflVitnesses: v

WM. P. ELLIOT,

WM. Bisiror.

stone, it wil1be obvious to any one having-V ,may fine most. convenient 'to his casting-floor p' Pbrother purposes; and, in order that the opiron or other vplate extending from the dann4 .tained in the reservoir. I-,also--keepthe'ironl.; contained in the `reservoir constantly (except. jwhen casting) covered overwithline Acharcoal .or braze, to prevent the air from chilling the t 'ment,A and wish tosecurevbyLet'ters Patent,

' Theinode of conveyingthe melted viron tol the outside of the .furnace-hearth, so as to have n the cinder out, and then stopping the opera the plan substantially the sanieas herein seti- 

